Low spring primary production and microplankton carbon biomass in sub- antarctic patagonian channels and fjords (50–53°S)

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dc.contributor.authorIriarte, José Luis
dc.contributor.authorCuevas, Luis Antonio
dc.contributor.authorCornejo, Fernanda
dc.contributor.authorSilva, Nelson
dc.contributor.authorGonzález, Humberto E.
dc.contributor.authorCastro, Leonardo
dc.contributor.authorMontero, Paulina
dc.contributor.authorVargas, Cristian A.
dc.contributor.authorDaneri, Giovanni
dc.coverage.spatialChilean Patagonia
dc.date.accessioned2019-01-07T20:27:24Z
dc.date.available2019-01-07T20:27:24Z
dc.date.issued2018-10-15
dc.description.abstractIt is relevant to understand the processes and factors that modulate the efficiency of the carbon pump throughout the ecosystem of Patagonian fjords. Spatial variability of primary productivity and bacteria-microplankton biomass was assessed in relation to inorganic nutrients and stratification across nearshore zones of southern Patagonia (50-53 degrees S) in austral spring 2009. Estimates of primary productivity (300-500 mg C m(-2) d(-1)) and phytoplankton biomass (9-180 mg chlorophylla m(-2)) were low at offshore and inshore waters. Synergistic effects of low silicic acid concentrations and poor light penetration because of salinity-driven stratification of glacier meltwater in springtime appeared to negatively affect phytoplankton carbon biomass and primary production in this sub-Antarctic region. The knowledge of the relative importance of nutrient sources and light is especially significant for Patagonian glacier-fjord systems that are expected to receive higher freshwater inputs and will be more stratified in the future.es_ES
dc.description.sponsorshipThis study was fully funded by three CONA grants: CONA-C15F 09-12 to J.L. Iriarte, CONA-C15F 09-12 to N. Silva, and CONA-C15F 09-05 to L. Castro. Funding by FONDAP-COPAS Center (program 150100007) to the MIRAI MR08-06 cruise as part of a Joint Research Agreement between JAMSTEC and the COPAS Center.es_ES
dc.identifier.citationArctic and Alpine Res. 2018. Vol. 50, Nº. 01, e1525186es_ES
dc.identifier.issne1938-4246
dc.identifier.otherDOI: 10.1080/15230430.2018.1525186
dc.identifier.urihttp://hdl.handle.net/20.500.11894/1218
dc.language.isoeses_ES
dc.publisherInst. Arctic Alpine Res.es_ES
dc.relation.ispartofArctic and Antarctic Alpine Researches_ES
dc.relation.ispartofVol. 50:1
dc.rightsCreative Commons Attribution 4.0 International licensees_ES
dc.subjectCienciaes_ES
dc.subjectPelagic food webses_ES
dc.subjectPhytoplankton bloomses_ES
dc.subjectSurface sedimentses_ES
dc.subjectVariabilityes_ES
dc.subjectEcosystemses_ES
dc.titleLow spring primary production and microplankton carbon biomass in sub- antarctic patagonian channels and fjords (50–53°S)es_ES
dc.typeArtículoes_ES

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